Big Block 727 Tailshaft

OK. I picked up a running 440 with a 727 attached, however it has a short tail housing with a small brake drum connected to it. Here is my conundrum.

Can I switch out the tail shaft section to convert it to a normal (if there is such a thing) 727?
If so, what specifically do I need to do?
If not, I am guessing junk it?
thanks, FABO